If I could give 4.5 stars I would do that. The installation went very well and the two radiators do just what we wanted. One of them supplements the warmth from gas-powered central heating and has transformed a living room which never used to get warm enough. The other went into a previously unheated bedroom and has given us much pleasanter mornings and evenings. We look forward to installing solar PV panels in the near future, when some of the power for the radiators will be locally generated. The only drawback is that the radiators are pretty expensive - ?4,500 for two radiators is quite a lot, but you get what you pay for and we certainly got what we wanted.